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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 119 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 82 × 25 =
  2. 2.Digital root of 9890 =
  3. 3.Digital root of 23 × 75 =
  4. 4.Digital root of 74729 =
  5. 5.Digital root of 24641 =
  6. 6.Digital root of 39 × 33 =
  7. 7.Digital root of 87255 =
  8. 8.Digital root of 36 × 93 =
  9. 9.Digital root of 49876 =
  10. 10.Digital root of 19 × 52 =
  11. 11.Digital root of 68951 =
  12. 12.Digital root of 52061 =
  13. 13.Digital root of 43 × 53 =
  14. 14.Digital root of 44193 =
  15. 15.Digital root of 15 × 72 =
  16. 16.Digital root of 80415 =
  17. 17.Digital root of 66 × 54 =
  18. 18.Digital root of 72235 =
  19. 19.Digital root of 61194 =
  20. 20.Digital root of 71 × 21 =
  21. 21.Digital root of 38781 =
  22. 22.Digital root of 55811 =
  23. 23.Digital root of 40075 =
  24. 24.Digital root of 72 × 12 =
  25. 25.Digital root of 34 × 83 =
  26. 26.Digital root of 5506 =
  27. 27.Digital root of 39194 =
  28. 28.Digital root of 18200 =
  29. 29.Digital root of 17872 =
  30. 30.Digital root of 10689 =
  31. 31.Digital root of 28015 =
  32. 32.Digital root of 67 × 27 =
  33. 33.Digital root of 17859 =
  34. 34.Digital root of 75 × 49 =
  35. 35.Digital root of 81 × 35 =
  36. 36.Digital root of 99419 =
  37. 37.Digital root of 49 × 32 =
  38. 38.Digital root of 44449 =
  39. 39.Digital root of 11511 =
  40. 40.Digital root of 98126 =

Answer key

  1. 7
  2. 8
  3. 6
  4. 2
  5. 8
  6. 9
  7. 9
  8. 9
  9. 7
  10. 7
  11. 2
  12. 5
  13. 2
  14. 3
  15. 9
  16. 9
  17. 9
  18. 1
  19. 3
  20. 6
  21. 9
  22. 2
  23. 7
  24. 9
  25. 5
  26. 7
  27. 8
  28. 2
  29. 7
  30. 6
  31. 7
  32. 9
  33. 3
  34. 3
  35. 9
  36. 5
  37. 2
  38. 7
  39. 9
  40. 8

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